Intermittent electrical problems

::sigh:: when it rains, it pours.
My hubby took the day off, and while driving the truck first the radio
intermittently cut out (display and sound)... driving it a bit later the

radio cut out again, then completely, and he noticed the turn signals
also would not work.
Went home, turned truck off, called dealer, drove it over to the dealer
later, and all was working fine.
Of course since it was fine upon arrival, dealer wouldn't even look at
it, but said that turning it off and back on may have fixed the error
(darn, rebooting the truck fixes it? Wow.) When I got home I looked for
codes, but no new ones.
Any clue what this could be? My understanding is the radio and turn
signals are on two separate circuits... so why would they both go out at
the same time.
As it was daylight, we don't know if any other lights were affected.
The recall concerning rerouting the wiring under the clutch was just
done last week...
Any help appreciated. We thought maybe it was migrating water, as a
power hose was used on it last week by the dealer to clear off the
radiator fluid all over the drivers' side of the engine...
jmc

I don't know where the specific grounds are. You would have to find them.
A multimeter wouldn't be much use with this. More about finding the
grounds, cleaning and inspecting them for broken wires, etc. The power
washer and the water could compromise a weak connection.
Ken

Sounds like it could be a bad ignition switch. Next time the problem
occurs wiggle the ignition switch or turn it off and then back on. If
everything starts working again I would suspect bad contacts in the ignition
switch.

hmmm. Possibility. Yesterday, I turned the truck completely off and
immediately switched it back to just aux (so hubby could listen to the
radio), and the engine came back on (it hadn't quite stopped yet).
Could that be a symptom of a bad switch too, or just computer confusion
caused by an indecisive driver?
jmc

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